setheightforwidth not working?

[kcameron4456]

Hi everybody. I've poked a bit at QT before but I'm really a newbie. Now I'm attempting to put together a version of the classic minesweeper game.

This kind of game really needs square cells in the grid. I thought I could get that by applying the "heightforwidth" property to the qpushbuttons that make up each tile.
Here's an example of what I get:

Screenshot_2021-09-07_11-09-44.jpg

Here's the code for the cell:

class GridCell : public QPushButton
{
    bool Bomb;
    GridPos Pos;
 
public:
    GridCell() {}
    virtual ~GridCell() {}
 
    GridCell (QGridLayout *GridLayout, const GridPos &P) : QPushButton ()
    {
        Pos = P;
        GridLayout->addWidget(this, Pos.y, Pos.x);
 
        QSizePolicy p(sizePolicy());
        p.setHeightForWidth     (true);
        p.setVerticalPolicy     (QSizePolicy::Expanding);
        p.setHorizontalPolicy   (QSizePolicy::Expanding);
        p.setHorizontalStretch  (1);
        p.setVerticalStretch    (1);
        setSizePolicy           (p);
 
        setText("K");
    }
 
    void SetBomb (bool B = true)
    {
        Bomb = B;
    }
 
    bool IsBomb ()
    {
        return Bomb;
    }
};

class GridCell : public QPushButton
{
    bool Bomb;
    GridPos Pos;

public:
    GridCell() {}
    virtual ~GridCell() {}

    GridCell (QGridLayout *GridLayout, const GridPos &P) : QPushButton ()
    {
        Pos = P;
        GridLayout->addWidget(this, Pos.y, Pos.x);

        QSizePolicy p(sizePolicy());
        p.setHeightForWidth     (true);
        p.setVerticalPolicy     (QSizePolicy::Expanding);
        p.setHorizontalPolicy   (QSizePolicy::Expanding);
        p.setHorizontalStretch  (1);
        p.setVerticalStretch    (1);
        setSizePolicy           (p);

        setText("K");
    }

    void SetBomb (bool B = true)
    {
        Bomb = B;
    }

    bool IsBomb ()
    {
        return Bomb;
    }
};

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I've tried a lot of different things but guess I'm misunderstanding some fundamental concept.

A little help please?